She could have been America's sweetheart, except there was something naughty in the impish mischief of her devilish good looks. She played a little more tart than sweet. The always sexy, never virginal Natalie Wood started as a child actress in the 1950s. She stepped into her bad-girl stride as carnally knowledgeable juvenile delinquents in Rebel without a Cause (1955) and West Side Story